package com.yue.yadmin.utils;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

/**
 * Spring Context 工具类
 * @author liaoxinyue
 * 2018年7月11日 上午11:25:01
 * 
 */
public class SpringContextUtils implements ApplicationContextAware {
	public static ApplicationContext applicationContext; 

	@Override
	public void setApplicationContext(ApplicationContext applicationContext)
			throws BeansException {
		SpringContextUtils.applicationContext = applicationContext;
	}

	public static Object getBean(String name) {
		return applicationContext.getBean(name);
	}

	public static <T> T getBean(String name, Class<T> requiredType) {
		return applicationContext.getBean(name, requiredType);
	}

	public static boolean containsBean(String name) {
		return applicationContext.containsBean(name);
	}

	public static boolean isSingleton(String name) {
		return applicationContext.isSingleton(name);
	}

	public static Class<? extends Object> getType(String name) {
		return applicationContext.getType(name);
	}

	private static ServletRequestAttributes getServletRequestAttributes(){
		return (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
	}
		
	public static HttpServletRequest getRequest(){
		return getServletRequestAttributes().getRequest();
	}
	
	public static HttpServletResponse getResponse(){
		return getServletRequestAttributes().getResponse();
	}
}